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http://hdl.handle.net/1843/48851| Tipo: | Artigo de Periódico |
| Título: | Optimization of methodology for determination of inorganic chromium species in sewage sludge samples by HPLC-ICP-MS/MS |
| Autor(es): | Érica Soares Barbosa Ane Patrícia Cacique Gevany Paulino de Pinho Flaviano Oliveira Silvério |
| Resumo: | This study developed a methodology for extracting and speciating CrIII and CrVI in sewage sludge by high performance liquid chromatography, inductively coupled plasma tandem mass spectrometry (HPLC-ICP-MS/MS). The optimal procedure was solid-liquid extraction in a water bath with stirring at 50 °C for 16 h and 50 mmol L−1 ethylenediaminetetraacetic acid (EDTA) extraction phase at pH 9.5. In the validated method, the recovery in the fortification experiment was greater than 70% and the relative standard deviation was less than 7%. Speciation analyses showed that all CrVI was spontaneously reduced to CrIII in the sludge sample. The limits of detection and quantification were 0.060 and 0.20 µg L−1, respectively, and the analyses of CrIII by means of ICP-MS/MS were linear from 0.20 to 50 µg L−1. The extraction efficiency of Cr specie in this validated method improved from 4.09 to 53.3% compared to the EPA 1311 method. The methodology was successfully applied to quantify CrIII in a sludge sample with a lower concentration than that established by European legislation 80568/4225/91. |
| Assunto: | Lodo de esgoto Cromo Extração (Química) |
| Idioma: | eng |
| País: | Brasil |
| Editor: | Universidade Federal de Minas Gerais |
| Sigla da Instituição: | UFMG |
| Departamento: | ICA - INSTITUTO DE CIÊNCIAS AGRÁRIAS |
| Tipo de Acesso: | Acesso Aberto |
| Identificador DOI: | https://doi.org/10.21577/0103-5053.20200124 |
| URI: | http://hdl.handle.net/1843/48851 |
| Data do documento: | Dez-2020 |
| metadata.dc.url.externa: | https://www.scielo.br/j/jbchs/a/DGzgBBX6m5nJd6MxWMT5K5m/?lang=en |
| metadata.dc.relation.ispartof: | Journal of the Brazilian Chemical Society |
| Aparece nas coleções: | Artigo de Periódico |
Arquivos associados a este item:
| Arquivo | Descrição | Tamanho | Formato | |
|---|---|---|---|---|
| Optimization of methodology for determination of inorganic chromium species in sewage sludge samples by hplc-icp-ms ms.pdf | 418.69 kB | Adobe PDF | Visualizar/Abrir |
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